Search Results - "Jakopčić, K."

Vladimir Prelog i Zavod za organsku kemiju by Jakopčić, K

“…Snažna prisutnost organske kemije u nastavnim programima kemijskog inženjerstva i tehnologije vidljiva je od samog osnivanja Kraljevske tehničke visoke škole u…”
Get full text

Studies in the furan series. 23. Preparation of some new 5-substituted furfurylallylarylamines. Influence of substituents on the intramolecular Diels-Alder (IMDA) reaction by Klepo, Ž., Jakopčić, K.

“…Several new N‐allyl‐N‐(5‐substituted)‐2‐furfuryl‐p)‐toluidines IIIa‐e with Cl, Br, I, NO2 or CH3O groups in position 5 of the furan nucleus were prepared by…”
Get full text

The preparation of some 1-(2-furyl)-2-arylethylenes by Karminski-Zamola, G., Jakopčić, K.

“…Some 1‐(2‐furyl)‐2‐arylethylenes, where the furan nucleus is substituted in position 5 with a methyl or p‐chlorophenyl group and where the aryl group is…”
Get full text

New synthesis of substituted isoindolines from furans via epoxyisoindolines by Mance, A. D., Borovička, B., Karaman, B., Jakopčić, K.

“…The preparation of substituted N‐arylisoindolines 3 from simple furan derivatives 1 is reported. Oxatricycloadducts 2, readily accessible by intramolecular…”
Get full text

5-Nitro-N-phenyl-2-thiofuramide by Pavlović, G, Mance, A D, Jakopcić, K

Get full text

New compounds in the reaction of aromatic amines and 5-hydroxy-4-pyrone-2-carboxylate. The influence of a methoxy group by Kožul, M., Stiplošek, Z., Orhanović, Z., Jakopčić, K., Nagl, A., Hergold-Brundić, A.

“…Unlike most of other aromatic amines, 4‐methoxyaniline with methyl comenate (1) in the mixture of acetic acid and methanol (1:1) gave two unexpected products…”
Get full text

Crystal structure of N-p-tolyl-4-methyl-5-nitro-3a,4,5,7a-tetrahydro-5,7aepoxyisoindoline, C16H18N2O3, N-p-tolyl-4-methyl-3a,4,5,7a-tetrahydro- 5,7a-epoxyisoindoline, C16H19NO and of N-p-tolyl-4,4-dimethyl-5-nitro- 3a,4,5,7a-tetrahydro-5,7a-epoxyisoindoline, C17H20N2O3 by Hergold-Brundic A., Mestrovic E., Nagl A., Mance A.-D., Jakopcic K.

Get full text

A novel non photochemical ring contraction of 4-pyrones to cyclopent-2-enones by Jakopčic, K., Kojić, J., Orhanović, Z., Stiplošek, Z., Nagl, A., Hergold, A.

“…Unlike comenic acid or most other 4‐pyrones, methyl or ethyl comenate reacts with aromatic amines under mild conditions in the sense of ring contraction to…”
Get full text

New compounds in ring-opening reaction of 5-substituted epoxyisoindolines by Mance, Ana Dunja, Borovička, Branko, Jakopčić, KreŠImir, Pavlović, Gordana, Leban, Ivan

“…Methoxy or nitro group present in the furan ring of tertiary alkenylfurfurylamine changes the expected results of both, the intramolecular [4+2]cycloaddition…”
Get full text

On the photochemical dimerization of some 5-substituted 2-styryl-4-pyrones. The effect of 5-hydroxy-/ 5-methoxy-substitution by Stiplošek, Zdenka, Šindler-Kulyk, Marija, Jakopčić, KreŠImir, Višnjevac, Aleksandar, KojiĆ-ProdiĆ, Biserka

“…Irradiation of styryl‐4‐pyrones 1a‐1d or 2a‐2e (6‐9 × 10−3 M, methanol solution) with filtered (RAYONET photochemical reactor, 300 nm) or unfiltered uv‐light…”
Get full text

N -(4-Methylphenyl)- N -(5-nitrofurfuryl)- N -prop-2-ynylamine by Hergold-Brundić, Antonija, Pavlović, Gordana, Mance, Ana Dunja, Jakopčić, Krešimir

Get full text

Studies in the furan series. XXIII: Preparation of some new 5-substituted furfurylallylarylamines. Influence of substituents on the intramolecular Diels-Alder (IMDA) reaction by KLEPO, Z, JAKOPCIC, K

Get full text

Studies in the furan series. XXII: N-arylfurfuryl- and N-aryl-5-methylfurfurylamines and their N-allyl derivatives by KLEPO, Z, JAKOPCIC, K

Get full text

New epoxyisoindolines by intramolecular diels-alder reactions of some methyl-substituted allylaryl-2-furfurylamines by Mance, Ana Dunja, Šindler-Kulyk, Marija, Jakopčić, KreŠImir, Hergold-Brundić, Antonija, Nagl, Ante

“…N‐Alkenyl‐N‐(5‐substituted‐2‐furfuryl)‐N‐p‐toluidines 1–10 have been selected to study the intramolecular Diels‐Alder reaction of furans. New epoxyisoindolines…”
Get full text

Synthesis of 5-Arylamino-4-pyrone Carboxamides. A Contribution to the Knowledge About the Reaction of Aromatic Amines and 5-Hydroxy-4-pyrones by Kožul, Mirjana, Stiplošsek, Zdenka, Kojić, Josipa, Orhanović, Zlata, Jakopčić, Krešimir

“…The reaction of aromatic amine and 5-hydroxy-4-pyrone carboxylates in glacial acetic acid gave new type of 4-pyrone derivatives, that is 5-arylamino-4-pyrone…”
Get full text

Preparation of 3-hydroxy- and 3-methoxy-N-heteroaryl-2-methyl-4-pyridones by Jakopčić, Krešimir, Mintas, Mladen, Isufi, Islam

“…A number of new 3‐hydroxy‐ and 3‐methoxy‐2‐methyl‐4‐pyridones substituted on the nitrogen atom with selected heterocycles has been prepared. Novel chelating…”
Get full text

Synthesis of new 3-(phenoxyphenyl)sydnones by SINDLER-KULYK, M, JAKOPCIC, K, DUNJA MANCE, A

Get full text

Photochemical methoxy/hydroxymethyl rearrangement in 3-methoxy-N-substituted-4-pyridones by STIPLOSEK, Z, SINDLER-KULYK, M, JAKOPCIC, K, MEIC, Z, VIKIC-TOPIC, D

Get full text

Photochemical methoxy/hydroxymethyl rearrangement in 3-methoxy-N-substituted-4-pyriclones by Stiplošek, Z., Šindler-Kulyk, M., Jakopĉić, K., Meić, Z., Vikić-Topić, D.

“…N‐Substituted 3‐methoxy‐4‐pyridones Ia‐e rearrange to the corresponding N‐substituted 3‐hydroxymethyl‐4‐pyridones IIa‐e when irradiated at 254 or 300 nm in…”
Get full text